3-F-050: Receiver Performance
3-50F1:
Where would you normally find a low-pass filter in a radio receiver?
A and C, but not B.
In the AVC circuit.
In the Oscillator stage.
In the Power Supply.
3-50F2:
How can ferrite beads be used to suppress ignition noise? Install them:
Install them in the primary and secondary ignition leads.
In the resistive high voltage cable every 2 years.
Between the starter solenoid and the starter motor.
In the antenna lead.
3-50F3:
What is the term used to refer to the condition where the signals from a very strong station are superimposed on other signals being received?
Cross-modulation interference.
Intermodulation distortion.
Receiver quieting.
Capture effect.
3-50F4:
What is cross-modulation interference?
Modulation from an unwanted signal heard in addition to the desired signal.
Interference between two transmitters of different modulation type.
Interference caused by audio rectification in the receiver preamp.
Harmonic distortion of the transmitted signal.
3-50F5:
In Figure 3F15 at what point in the circuit (labeled 1 through 4) could a DC voltmeter be used to monitor signal strength?
4
1
2
3
3-50F6:
Pulse type interference to automobile radio receivers that appears related to the speed of the engine can often be reduced by:
Installing resistances in series with spark plug wires.
Using heavy conductors between the starting battery and the starting motor.
Connecting resistances in series with the battery.
Grounding the negative side of the battery.
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